Our Mega Fins rail is named after the “fins” that surround the rifle’s barrel. The purpose of these fins is to help dissipate the heat generated from the rifle barrel. The mega fins features a full 7 sided (heptagonal) keymod system. This translates into full placement of rail sections and furniture at every angle.

The Mega Fins come in 3 colors: Matte Black, FDE, and Urban Grey. The package includes the barrel nut, a set of shims and a barrel nut tool. Whatever your style, whatever your preference, Strike Industries has your covered.

*All weights taken with barrel nut and screws installed

KEYMOD RAIL SECTION

Along with the Megafins come the rail's Keymod accessories. For those who want the lightest possible set up, S.I. has a set of two piece standard polymer 5 section rails. Each polymer rail weights 0.4 oz.

Our 45 degree lines of rails are especially useful with the Mega Fins because of their easy plug-in capabilities. They’re a perfect way to run a magnified sight and a red dot at a 45 degree angle for shorter engagements.

And finally the standard 1913 sections for side and under rail mounting. The come in 9 and 5 sections. The S.I. rail sections are made for our Mega Fins rails but will work with most other KeyMod systems.

About David Crane

David Crane started publishing online in 2001. Since that time, governments, military organizations, Special Operators (i.e. professional trigger pullers), agencies, and civilian tactical shooters the world over have come to depend on Defense Review as the authoritative source of news and information on "the latest and greatest" in the field of military defense and tactical technology and hardware, including tactical firearms, ammunition, equipment, gear, and training.

the fins won’t touch most barrels. sadly, they will keep me from using them since they won’t allow my 1″ suppressor to fit in there (the 4″ barrel is also .974″ and these only allow .944″ from what I’ve read). They need to make a finless version! Still, it’s a good, innovative idea and a great product.